How do I resolve Butterfly Error 500

[Ricardo Figueroa]

Hello,
I have been having issues installying OpenRefine with the RDF extension.  I am getting Butterfly error 500. 
Browser I am using is FireFox.
Error is:

HTTP ERROR 500

Problem accessing /. Reason:

    Butterfly Error
Butterfly incurred in the following errors while initializing:
java.lang.Exception: Failed to initialize module rdf-extension [edu.mit.simile.butterfly.ButterflyModuleImpl]
	at edu.mit.simile.butterfly.Butterfly.initializeModule(Butterfly.java:478)
	at edu.mit.simile.butterfly.Butterfly.configure(Butterfly.java:451)
	at edu.mit.simile.butterfly.Butterfly.init(Butterfly.java:308)
	at org.mortbay.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:440)
	at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:263)
	at com.google.refine.RefineServer.configure(Refine.java:294)
	at com.google.refine.RefineServer.init(Refine.java:208)
	at com.google.refine.Refine.init(Refine.java:114)
	at com.google.refine.Refine.main(Refine.java:108)
Caused by: org.mozilla.javascript.EvaluatorException: Can't find method com.google.refine.RefineServlet.cacheClass(object). (file:/C:/Users/RFiguero/AppData/Roaming/OpenRefine/extensions/rdf-extension/MOD-INF/controller.js#82)
	at org.mozilla.javascript.DefaultErrorReporter.runtimeError(DefaultErrorReporter.java:109)
	at org.mozilla.javascript.Context.reportRuntimeError(Context.java:938)
	at org.mozilla.javascript.Context.reportRuntimeError(Context.java:994)
	at org.mozilla.javascript.Context.reportRuntimeError1(Context.java:957)
	at org.mozilla.javascript.NativeJavaMethod.call(NativeJavaMethod.java:166)
	at org.mozilla.javascript.optimizer.OptRuntime.call1(OptRuntime.java:66)
	at org.mozilla.javascript.gen.c6._c4(file:/C:/Users/RFiguero/AppData/Roaming/OpenRefine/extensions/rdf-extension/MOD-INF/controller.js:82)
	at org.mozilla.javascript.gen.c6.call(file:/C:/Users/RFiguero/AppData/Roaming/OpenRefine/extensions/rdf-extension/MOD-INF/controller.js)
	at org.mozilla.javascript.ContextFactory.doTopCall(ContextFactory.java:398)
	at org.mozilla.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3065)
	at org.mozilla.javascript.gen.c6.call(file:/C:/Users/RFiguero/AppData/Roaming/OpenRefine/extensions/rdf-extension/MOD-INF/controller.js)
	at edu.mit.simile.butterfly.ButterflyModuleImpl.scriptInit(ButterflyModuleImpl.java:636)
	at edu.mit.simile.butterfly.ButterflyModuleImpl.init(ButterflyModuleImpl.java:94)
	at edu.mit.simile.butterfly.Butterfly.initializeModule(Butterfly.java:476)
	... 8 more


1) I am new to this tool but I need to use it for a project at work.  I need step by step instructions to correct this as I tried to find how to uninstall this but do not find this in the control panel
2) I need instructions how to set up the RDF extension

3) are other browsers better for OpenRefine with RDF extension.  


Any advise and help would be appreciated.  I havent found ground documentation.  


Ricardo 

---

[fadi maali]

Hello Ricardo,

Can you specify which version of Open Refine and RDF Extension you are using?

To remove the RDF extension, just remove its folder from the Open Refine extensions folder (same folder you used to insall RDF Extension).

Regards,

Fadi

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[qi cui]

The jar file seems not there.

If you downloaded the RDF source, run:

cd src\OpenRefine\extensions\rdf-extension
ant